The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 02, 2019
Filed:
May. 07, 2012
Seyed A. Angadjivand, Woodbury, MN (US);
John M. Brandner, St. Paul, MN (US);
Nhat Ha T. Nguyen, Woodbury, MN (US);
Seyed A. Angadjivand, Woodbury, MN (US);
John M. Brandner, St. Paul, MN (US);
Nhat Ha T. Nguyen, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A respiratorthat has a mask bodyand a harnessthat is attached to the mask body. The mask bodyincludes a filtering structurethat has an inner cover web, an outer cover webthat comprises melt-blown fibers and staple fibers, and a filtration layerthat is located between the inner and outer cover webs. The mask bodyalso has a meshthat is joined to the outer cover web. A respirator having this construction is more resistant to inward collapse of the filter media during breathing and is more aesthetically pleasing.